Bump dotnet-stryker from 4.5.1 to 4.8.1

---
updated-dependencies:
- dependency-name: dotnet-stryker
  dependency-version: 4.8.1
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <[email protected]>

Author: dependabot[bot]

.config/dotnet-tools.json

@@ -10,7 +10,7 @@
       "rollForward": true
     },
     "dotnet-stryker": {
-      "version": "4.5.1",
+      "version": "4.8.1",
       "commands": [
         "dotnet-stryker"
       ],